The ancient Viking kitchen featured a built-in deep fryer known as 'eldhus'. The eldhus was a stone hearth with a built-in frying pan. Vikings used this deep fryer to prepare dishes like 'fiskeboller' (deep-fried fish balls) and 'klejner' (deep-fried twisted pastries). The eldhus was heated by burning wood or coal, and the frying pan was filled with oil or fat. Viking cuisine had a focus on preserving food through techniques like frying, and the use of a built-in deep fryer in their kitchens allowed for efficient frying of various ingredients.
